Frog for trolleys.



J. M. PREMOSHIS.

FROG FOR TROLLEYS. APPLICATION FILED we. 26, 1911.

1,017,462; Patented Feb. 13, 1912 WIlwEssEs: IJV VEJVTOR.

rlMvPrenwahzls COLUMBIA PLANUGRAFH 110., WASHINGTON, n. c.

JOHN MIKEOL PREMOSHIS, 0F FORBES ROAD, PENNSYLVANIA.

FROG FOR TROLLEYS.

Application filed August 26, 1911.

Specification of Letters Patent. I

Patented Feb. 13, 1912.

Serial No. 646,173.

To all whom it may concern:

Be it known that I, JOHN Mixnoi. PRE- MOSHIS, a citizen of the United States of America, residing at Forbes Road, in the county of lVestnioreland and State of Pennsylvania, have invented certain new and useful Improvements in Frogs for Trolleys, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to trolley frogs for use in trolley lines, and has for its object to provide a frog in a manner as hereinafter set forth, for switching a trolley wheel from a branch line conductor on to a main line conductor.

Further objects of the invention are to provide a trolley frog which is comparatively simple in its construction and ar rangement, strong, durable, efficient in its use, compact, readily suspended with respect to the conductors of a line, and comparatively inexpensive to manufacture.

With the foregoing and other objects in view, the invention consists of the novel construction, combination, and arrangement of parts as hereinafter more specifically de scribed and illustrated in the accompanying drawings, wherein is shown the preferred embodiment of the invention, but it is to be understood that changes, variations, and modifications can be resorted to which come within the scope of the claims hereunto appended.

The drawing illustrates an inverted perspective view of a trolley frog in accordance with this invent-ion.

Referring to the drawing in detail, 1 denotes a rectangular base, having at each side a loop 2, (only one shown) for the connecting to the base of a suitable suspension means therefor.

The lower face of the base 1 is cut away to provide a pair of inclined walls 3, 4, which converge with respect to each other in a direction toward one end of a base. The cutting away of the base 1 to form the inclined walls 3, provides the lower face of the base with what may be termed V-shaped recess 5 of the same length as the length of the base, with the recess gradually decreasing in width toward one end of the base. The top wall of the recess 5, central of the smaller end of said recess is provided with a V-shaped tongue which gradually increases in width toward the small end of the recess 5, and which terminatesin an elongated rectangular holder 8, the latter being integral with and projecting from the base 1. The holder 8 is formed with an opening 9, which constitutes a socket, and into which extends the main trolley wire 10. That end of the wire 10 which extends into the holder 8 is fixedly secured thereto by the screws 11, these latter extending down to the bottom of the holder 8 and engaging the wire 10, whereby it is clamped to the wall of the opening. The tongue 7 as well as the holder 8, extends in a plane longitudinally of the center of the base 1.

Formed integral with the top wall of the recess 5, as well as depending from said wall is a pair of oppositely disposed and inclined tongues 12, 13, the tongue 12is opposite the side wall 3, while the tongue 13 is opposite the side wall 4 of the recess 5. One side of the tongue 12 extends in the same direction as the wall 3, whereas a portion of the other side of the tongue 12, as at 14, extends in the same direction as the wall 3, but the remaining portion 15 extends at an inclination and in a direction opposite with respect to the direction in which the wall 3 extends, thereby providing the inner end of the tongue pointed. One side of the tongue 13 extends in the same direction as the wall 4, while the other side of said tongue, for a portion of its length, as at 16, extends in the same direction as the wall 4, but the remaining portion of said side, as at 17, extends at an inclination opposite to that of an inclination of the wall 4, thereby providing the inner end 18 of the tongue 13 pointed. The inner end of the tongue 7 is positioned between the inner end 16, 18 of the tongues 12, 13. The portions 15, 17 of the sides of the tongues 12, 13, incline in the same direction as the sides of the tongue 7 Formed integral with the base 1, and projecting therefrom, are holders 19, 20 for branch wires 21, 22 respectively. The holders 19, 20 are integral with the outer ends of the tongues 12, 13. Each of said holders 19, 20 is provided with a socket for a branch wire, which is clamped in position by the set screws 23 extending down through the holder and engaging the wire, securing it against the wall of the socket.

What I claim is:

1. A trolley frog comprising a base having its lower face provided with a recess and further provided within said recess with a longitudinal extending tongue and a pair of tongues diverging at an inclination in the direction of their length the longitudinal tongue extending betwen said inclined tongues, trolley wire holders integral with and projecting from said base and further integral with said tongues, each of said holders provided with a socket for the reception of the end of a trolley wire, and means carried by the holders for clamping the trolley wires thereto.

2. A trolley frog comprising a base having a recess in the lower face, a tapering tongue integral with and central of the top wall of said recess at one end thereof,- a pair of tongues integral with said top wall and arranged in proximity to each side of said recess at the other end thereof, said tapering tongue extending between the inner ends of said pair of tongues, the tongues of said pair disposed at opposite inclinations with respect to each other, rectangular holders integral with the outer end of each of said tongues and with said base and projecting from each end of said base, and means for securing trolley conductors to the outer ends of said holders.

In testimony whereof I affiX my signature in the presence of two witnesses.

JOHN MIKEOL PREMOSHIS.

lVitnesses MAX H. SRoLovITz, M. E. BECKERT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

